Benglenisky – A Scenic Peak in the Twelve Bens

Overview

Benglenisky, known in Irish as Binn Ghleann Uisce (“peak of the glen of water”), rises to 516 m (1 695 ft) on the western edge of the Twelve Bens range. It is the lowest of the core Bens and the second‑most southerly summit after Benlettery. Though modest in height, the mountain commands striking views of the surrounding Connemara landscape, including Ballynahinch Castle, Ballynahinch Lake and the full sweep of the Twelve Bens ridge.

History & Naming

The name derives from the glen on the south‑east side of the peak, a water‑filled valley that gave the mountain its Irish descriptor. On the north‑west side, in the townland of Ballynaclogh, the hill is also recorded as Binn Dubh (“Black Peak”) or Binn Dubhán (“Black Hill”). The area is historically linked to the quarrying of Connemara marble at Barr na nÓrán, an enterprise begun by Thomas Barnwall Martin in the 1820s.

Geography & Connections

Benglenisky sits just off the main horseshoe‑shaped ridge that defines the Glencoaghan River valley. A high north‑easterly ridge links it to Bengower (664 m), and a fork from that ridge connects to Benlettery (577 m). Because it juts out on its own spur, the peak often appears as a backdrop to the Ballynahinch estate, yet it is frequently bypassed by walkers tackling the more famous Glencoaghan Horseshoe.

What to See & Do

The mountain is popular with walkers seeking a shorter, rewarding climb. Two main routes are described in guidebooks:

1. Standalone ascent – a 5 km round‑trip that typically takes 2–3 hours. The trail starts and finishes at the Ben Lettery An Óige youth hostel, following a well‑marked path up the west flank. The ascent climbs a series of stony benches and offers intermittent views of the neighbouring Bens before reaching the summit cairn.
2. Bens Loop – a 7 km loop that incorporates Benglenisky, Bengower and Benlettery. This 3–4 hour ridge walk follows the high ridge connecting the three peaks, delivering a continuous panorama of the Connemara skyline and the glacial valleys below.

At the summit, a modest cairn marks the highest point. From here, walkers can spot the full arc of the Twelve Bens, the shimmering surface of Ballynahinch Lake, and on clear days, the distant peaks of the Maumturks. The ridge walk also provides opportunities to explore the rocky outcrops and boulder fields that give the Bens their distinctive quartzite character.

Practical Information

Benglenisky is free to access; there is no admission charge and no formal opening hours. The most convenient starting point is the Ben Lettery An Óige youth hostel, which offers parking and basic facilities. The route is well‑signposted, but navigation skills are advisable in misty conditions, as the area can become featureless on the summit plateau.

The hike is suitable for experienced hillwalkers comfortable with moderate ascents and occasional rocky scrambling. The descent from the summit can be steep, particularly on the western side, so careful footing is recommended. For those wishing to combine the climb with a stay, the Ben Lettery hostel provides dormitory accommodation and a communal kitchen, making it easy to organise a pickup or a short road walk back to Clifden.

For further details on routes and recent walker reports, consult the MountainViews database (Benglenisky page). The peak is also listed in the Irish mountain catalogue as an Arderin and a Myrddyn Dewey, confirming its status among Ireland’s notable summits.

Nearby attractions

While exploring Benglenisky, consider adding a few neighbouring sites to your itinerary:

• Ballynahinch Castle – the historic estate that dominates the lakeshore, offering gardens and a café open to visitors.
• Benbaun – the highest summit in the Twelve Bens (729 m), reachable via a longer ridge walk for those seeking a more challenging day.
• Ballynahinch Lake – a tranquil spot for picnicking or a brief lakeside stroll after your ascent.

These attractions are all within a short drive or walk from the Ben Lettery base, allowing a varied Connemara day‑trip.